Preview is always displayed, even for an expanded node

[j3rem1e]

When a node is expanded, the preview is visible.

v2.2.0, visible in https://lihautan.com/svelte-json-tree/ or in REPL https://svelte.dev/repl/89867bd1acaa48b4b29e29d1fdfa1ddf?version=4.2.8

[j3rem1e]

@tanhauhau Is this library still supported ? What can I do to help with this issue ? thanks !